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Consider 5 kg of air initially at 101.3 kPa and 38 C. Heat is transferred to the air until the temperature reaches 260 C. Determine the change in internal energy, the change in enthalpy, the heat transfer, and the work done for (a) a constant-volume process and (b) a constant-pressure process. Use SI units. Show pv and tv graphs. Are the systems closed and are they rigid?
in measuring the strains applied to a symmetrical i beam a full bridge is used. two strain gages are attached to the
A collar B of weght W can move freely along thevertical rod. The constant of the spring is k and the spring is unstretched when theta=0. Derive an equation in W thrta k and l that must be satisfied when h collar is in equilibrium.
a 25 mm diameter uniform steel shaft is 600 mm long between bearings.a find the lowest critical speed of the shaftb if
Knowing that crank AB has a constant angular velocity of 160 rpm counterclockwise, determine the angular velocity of rod BD and the velocity of collar D when a. delta=0, b. delta = 90.
Kinetic and potential energy effects can be ignored. Evaluate the work required and the heat transfer, each in kW.
in a laboratory steam is condensed at atmospheric pressure i.e. 212degf on the shell-side of a vertically-oriented
(a) Describe how the capacitors are combined. (b) There are three other ways to combine all three capacitors in a circuit. What are the equivalent capacitances for each arrangement?
A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
The heat transfer convection coefficient between the wall and the fluid is 500 W/m2.K. Find the maximum temperature in wall.
a clock is slow such that it falls behind 15.2 min in every hour. calculate the angular velocity of its second hand the
problem 1 a 10-minute experimental run shows that 75 of liquid reactant is converted to product by a half-order rate.
consider incompressible viscous flow between two very long plates separated by a distance h. the bottom plate is
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